Wow, did it bend below the bracing right at the seat tube? I've got some layback posts like that but I don't use them cuz they cause the seat to ride too high for what I like in a cruiser. Some of the old tioga layback posts had an internal vertical gusset that ran up thru the seat post insertion end and into the bend, might be better.
Like these
http://cgi.ebay.com/SEAT-POST-BIKE-...VQQcmdZViewItemQQ_trksidZp1638Q2em118Q2el1247
Like these
http://cgi.ebay.com/SEAT-POST-BIKE-...VQQcmdZViewItemQQ_trksidZp1638Q2em118Q2el1247